.box1 {
  transition: 1s all;
  -webkit-transition: 1s all;
  -moz-transition: 1s all;
}

.box2 {
  transition: 2s all;
  -webkit-transition: 2s all;
  -moz-transition: 2s all;
}

.box3 {
  transition: 3s width;
  -webkit-transition: 3s width;
  -moz-transition: 3s width;
}
